“Inclusion of Optical Digital Audio cable ? My Seiki HDTV only has an Optical Audio Output, but not an HDMI ARC... Hence it would seem that the only way to connect it to the Dynex Soundbar System Black/Gray (which apparently comes with an Optical Digital Audio Input) is through an Optical Digital Audio Cable. There seem to be some cables included in the Dynex Soundbar System package... Does it also include an Optical Digital Audio Cable that would be compatible with my Seiki HDTV SE39HC ?? If not, pls advise which Optical Digital Audio Cable I can use to give me linkage between the Dynex Soundbar and my Seiki set, and where to purchase it.”